It is not a risk for hiv .But it does put you at risk for many other sti's .Like klebsiella oxytoco,hhv6,ebv,pseudomonasand a host of other bacterial and viral infections wich can cause serious illnesses and health conditions.once you have these Sti's your risk for contracting Hiv increases.
Oral sex is not a risk for HIV transmission. Presence of saliva inhibits the virus.
Testing is not recommended for this event.